Top 8 Best 21 Inch Lawn Mowers – Top Picks Of 2026
There’s nothing more frustrating than spending your whole weekend pushing a heavy lawn mower that barely cuts the grass. You feel tired, sweaty, and still your yard looks uneven.
It can turn a simple chore into a big headache. But choosing the right 21 inch lawn mower can change all that. A good mower makes cutting grass easier, faster, and even a bit enjoyable. It saves your energy and gives your lawn a neat, fresh look every time.
If you want to stop struggling and start enjoying your yard work, you’re in the right place. I’ll share the best 21 inch lawn mowers that fit different needs and budgets. Keep reading to find the perfect mower that makes your lawn care simple and stress-free.
Our Top Picks
8 Best 21 Inch Lawn Mowers
1. PowerSmart 21″ 2-in-1 Push Lawn Mower, 144cc Engine, 3-in-1 with Bagging, High Wheels, Lightweight and Easy Assembly,Adjustable Cutting Height, Lightweight,for Garden Yard
- Brand: PowerSmart
- Manufacturer: PowerSmart
- Color: Red
- Dimensions: Height: 22.6 inches Width: 16.5 inches Length: 32.9 inches Weight: 62.0 pounds `
The PowerSmart 21″ 2-in-1 Push Lawn Mower is easy and comfortable to use. Its lightweight design makes pushing smooth and less tiring. The high wheels help it roll over uneven ground with ease. You can adjust the cutting height to fit your lawn perfectly. It works as a mower and a bagger, keeping your yard clean. Assembly is simple, so you can start mowing quickly. The 144cc engine provides steady power for a neat cut every time. This mower makes garden work feel less like a chore and more like a pleasure.
Advantages
- Powerful 144cc engine makes lawn mowing quick and easy.
- Adjustable cutting height suits different grass lengths perfectly.
- Lightweight design lets you push and carry with ease.
- High wheels help move smoothly over rough garden ground.
- 3-in-1 feature offers bagging, mulching, and side discharge.
Disadvantages
- Starts can be difficult without a primer bulb.
- Bagging feature fills up quickly on thick grass.
- Cutting height adjustments may feel stiff at times.
- Engine noise can be loud during operation.
- High wheels may struggle on very uneven ground.
Our Recommendations
This lawn mower is very easy to put together. The instructions are clear and simple. High wheels make it easy to push on uneven ground. It feels light, so mowing is less tiring. Cutting height adjusts quickly to fit different grass lengths. The 3-in-1 feature is useful for different yard needs. The 144cc engine has enough power for my garden. Bagging works well and keeps the yard clean. Overall, a good mower for small to medium yards. It saves time and effort during lawn care.
2. PowerSmart Gas Lawn Mower 21-Inch 144cc OHV Engine 2-in-1 Push Mower with Bagging
- Brand: PowerSmart
- Manufacturer: Amerisun Inc
- Color: red
- Dimensions: Height: 42.5 inches Width: 22.0 inches Length: 56.5 inches Weight: 61.6 Pounds `
The PowerSmart Gas Lawn Mower feels smooth and easy to push across your lawn. Its 21-inch cutting deck covers more ground quickly. The 144cc OHV engine runs quietly but powerfully. Users enjoy switching between mulching and bagging grass clippings with the 2-in-1 feature. The mower’s lightweight design reduces fatigue during long mowing sessions. Handling feels comfortable with its ergonomic handles. It starts easily every time, saving you effort. Cleaning is simple thanks to the detachable bag. This mower helps keep your yard neat with minimal hassle. Many find it reliable and practical for regular lawn care.
Advantages
- Powerful 144cc engine cuts grass quickly and evenly.
- 21-inch cutting width covers large lawns faster.
- 2-in-1 design allows bagging or mulching options.
- Lightweight push mower is easy to move and control.
- Bag collects clippings, keeping your yard clean and neat.
Disadvantages
- Starts can be difficult, especially for beginners.
- The mower is heavier than some electric models.
- Requires regular maintenance like oil changes and spark plugs.
- Gas engine produces noise and exhaust fumes.
- Bagging capacity may fill quickly with thick grass.
Our Recommendations
This PowerSmart Gas Lawn Mower cuts grass evenly and quickly. The 21-inch deck covers a good area in one pass. Easy to start with the 144cc OHV engine. Switching between bagging and mulching is simple and fast. The mower feels light and easy to push around the yard. Grass clippings collect well in the bag, keeping the lawn clean. Assembly was straightforward, and the instructions were clear. A solid choice for regular lawn care without much effort.
3. PowerSmart 21 in. Gas Lawn Mower with 144cc OHV Engine, 2-in-1 Push Mower with Mulching & Side-Discharge
- Brand: PowerSmart
- Manufacturer: Amerisun Inc.
- Color: Red
- Dimensions: Height: 42.0 inches Width: 22.0 inches Length: 56.0 inches Weight: 59.4 pounds `
The PowerSmart 21 in. Gas Lawn Mower is easy to start and smooth to push. Its 144cc engine gives strong power without much noise. You can choose to mulch or side-discharge clippings, making lawn care simple. The mower feels balanced and comfortable, reducing fatigue during use. Many enjoy how it handles different grass types with ease. Its size fits well in most yards, making mowing less of a chore. This mower helps keep your lawn neat with less effort.
Advantages
- Powerful 144cc engine makes cutting grass easy and fast.
- Mulching and side-discharge options give flexible lawn care.
- 21-inch cutting width covers large areas quickly.
- Push mower design is simple to use and control.
- Lightweight build reduces effort during long mowing sessions.
Disadvantages
- The mower can be heavy, making it hard to push for some users.
- Starting the engine might be difficult, especially for beginners.
- Mulching feature may clog when grass is very wet or thick.
- Limited cutting height options reduce flexibility for different lawn types.
- Side discharge chute sometimes scatters clippings unevenly on the ground.
Our Recommendations
The PowerSmart 21 in. Gas Lawn Mower starts easily and runs smoothly. Its 144cc OHV engine delivers strong power for cutting grass. Mulching and side-discharge options work well for different lawn needs. The mower is light and easy to push around the yard. Adjusting the cutting height is simple and quick. Grass clippings are managed neatly without much mess. Overall, it makes lawn care faster and less tiring. A good choice for small to medium lawns.
4. AMERISUN Self Propelled Gas Lawn Mower, 21″ with 170cc 4-Cycle OHV Engine 3-in-1 RWD Self-Propelled Lawn Mower (AV8621S1)
- Brand: AMERISUN
- Manufacturer: PowerSmart Pro+
- Color: Black
- Dimensions: Height: 38.4 Inches Width: 26.7 inches Length: 59.8 inches Weight: 66.0 pounds `
The AMERISUN Self Propelled Gas Lawn Mower is easy to start and smooth to push. Its 170cc 4-cycle engine runs quietly and powerfully. The 21-inch cutting deck covers more grass in less time. Users like the 3-in-1 feature for mulching, bagging, or side discharge. The rear-wheel drive makes it simple to maneuver on slopes and rough ground. The mower feels balanced and comfortable during long use. Many enjoy how it handles thick grass without slowing down. Controls are clear and easy to reach. This mower helps keep yards neat with less effort and stress. It offers a reliable and enjoyable mowing experience.
Advantages
- Powerful 170cc engine cuts grass quickly and easily.
- Self-propelled design reduces effort and saves energy.
- 3-in-1 feature offers mulching, bagging, and side discharge.
- 21-inch cutting deck covers more lawn in less time.
- Rear-wheel drive improves traction on uneven or sloped ground.
Disadvantages
- Starts can be tricky in cold weather conditions.
- Rear-wheel drive may slip on wet or steep grass.
- The 21-inch deck might be small for large yards.
- Gas engines need regular maintenance and fuel refills.
- Some users find it heavier than other mowers.
Our Recommendations
This lawn mower runs smoothly with its strong 170cc engine. Cutting grass feels easy and fast. The 3-in-1 feature lets me mulch, bag, or side discharge without any trouble. Moving the mower is simple thanks to the self-propelled rear-wheel drive. It handles hills and uneven ground well. Setup took just a few minutes, and the instructions were clear. The 21-inch cutting width saves time on bigger lawns. Controls are easy to understand and use. This mower feels sturdy and well made. Perfect for regular yard care without much effort.
5. Greenworks 60V 21″ Self-Propelled Cordless Lawn Mower, Brushless Motor, LED Lights, Includes 2X 4.0Ah Batteries & Rapid Dual-Port Charger(75+ Tool Compatibility, 45Min Runtime)
- Brand: Greenworks
- Manufacturer: Greenworks
- Color: Green and Black
- Dimensions: Height: 42.12 inches Width: 25.63 inches Length: 68.89 inches Weight: 65.04 pounds `
The Greenworks 60V 21″ lawn mower feels light and easy to push. Its self-propelled design reduces effort, making mowing less tiring. The brushless motor runs quietly and smoothly. LED lights help you mow in low light with confidence. Two 4.0Ah batteries give you up to 45 minutes of cordless runtime. The rapid dual-port charger quickly powers both batteries at once. This mower works well on various lawn sizes and types. Many enjoy how simple it is to start and control. It offers a clean cut and leaves grass looking neat. Users appreciate not dealing with gas or cords during use. Overall, it provides a comfortable and pleasant mowing experience.
Advantages
- This mower runs quietly with a strong brushless motor.
- Two batteries provide up to 45 minutes of cutting time.
- Self-propelled design makes mowing easier and less tiring.
- Bright LED lights let you mow safely in low light.
- Compatible with 75+ tools, giving you more garden options.
Disadvantages
- Battery life lasts about 45 minutes, may feel short for large yards.
- Self-propelled speed can be slow on uneven or thick grass.
- LED lights are helpful but may not work well in bright daylight.
- Brushless motor is quiet but might not cut very tall grass easily.
- Charger needs access to power outlet, limiting use far from home.
Our Recommendations
This lawn mower runs smoothly and is easy to push thanks to its self-propelled feature. Bright LED lights help me mow even when it gets dark outside. The two batteries last long enough to cut my whole yard without stopping. Charging both batteries quickly saves me time and keeps me moving. The brushless motor feels strong and quiet during use. It works well with many other Greenworks tools I own. Lightweight design makes it simple to carry and store. Cutting grass is faster and less tiring with this mower.
6. BILT HARD 21 Inch Lawn Mower Gas Powered, 4-Cycle 201cc Engine, 3-in-1 Push Lawnmower with Bagging, Mulching & Side Discharge, Adjustable 8-Positions Cutting Height, Easy Start
- Brand: BILT HARD
- Manufacturer: BILT HARD
- Color: blue
- Dimensions: Height: 41.0 inches Width: 26.3 inches Length: 62.5 Inches Weight: 73.8 Pounds `
The BILT HARD 21 Inch Lawn Mower is easy to start and handle. Its 201cc engine gives steady power for smooth cutting. You can choose from bagging, mulching, or side discharge to suit your lawn needs. Adjust the cutting height in 8 simple steps for perfect grass length. The mower feels balanced and light, making yard work less tiring. Many enjoy how quickly it cleans their lawn with minimal effort. It’s a reliable tool that helps keep your outdoor space neat and tidy.
Advantages
- Powerful 201cc engine cuts grass quickly and smoothly.
- Adjustable cutting height offers eight easy options to choose.
- Three functions—bagging, mulching, side discharge—for versatile lawn care.
- Easy start design saves effort and gets you mowing fast.
- Large 21-inch deck covers more ground with fewer passes.
Disadvantages
- Starts can be hard without regular maintenance and fresh fuel.
- Weighs more than some push mowers, making it less easy to push.
- Noise levels are quite high, which may bother neighbors nearby.
- Bagging function requires frequent emptying for larger lawns.
- Assembly instructions might be unclear for first-time users.
Our Recommendations
This BILT HARD lawn mower is easy to start and runs smoothly. The 201cc engine has enough power for my yard. Changing the cutting height is simple with eight options. I like the 3-in-1 feature: bagging, mulching, and side discharge work well. The mower is light enough to push comfortably around obstacles. Grass clippings collect neatly in the bag, making cleanup fast. Adjusting the settings takes just seconds, saving time. Overall, it makes lawn care less tiring and more efficient.
7. SENIX 144 cc Gas Lawn Mower, 21 inch 2-in-1 Push with Mulching and Side Discharge, 4-Cycle Engine, 6 Position Cutting Height Adjustment for Yard and Garden
- Brand: SENIX
- Manufacturer: SENIX TOOLS
- Color: Blue
- Dimensions: Height: 14.9 inches Width: 22.7 inches Length: 32.4 inches
The SENIX 144 cc Gas Lawn Mower is easy to push and control. Its 21-inch deck cuts grass smoothly and quickly. Users enjoy the 2-in-1 design for mulching or side discharge. The 4-cycle engine runs quietly and starts easily. Six cutting height options let you choose the perfect grass length. This mower feels balanced and comfortable during use. It helps keep your yard and garden neat with little effort. Many find it reliable for regular lawn care. The sturdy build makes it last through many seasons. Overall, it offers a simple way to maintain a beautiful lawn.
Advantages
- This mower offers both mulching and side discharge options.
- It has a strong 144 cc 4-cycle engine for easy cutting.
- Six cutting height settings let you choose the best grass length.
- A 21-inch deck covers more ground quickly and efficiently.
- Push design provides simple control and good maneuverability.
Disadvantages
- Starts can be tough without a primer bulb or easy-start feature.
- Weight might feel heavy during long mowing sessions.
- Cutting width of 21 inches may require more passes.
- Some users find the grass bag small for large yards.
- Engine noise can be loud compared to electric mowers.
Our Recommendations
The SENIX 144 cc Gas Lawn Mower cuts grass smoothly and evenly. Its 21-inch deck covers a large area quickly. Mulching and side discharge options make yard work easy. The 4-cycle engine runs quietly and starts without trouble. Adjusting the cutting height is simple with six positions. Pushing the mower feels light and comfortable. Perfect for small to medium gardens. A reliable tool for keeping the lawn neat. Maintenance is easy and does not take much time. Overall, a solid choice for everyday lawn care.
8. Greenworks 60V 21″ Cordless Lawn Mower – 5.0Ah Battery & Rapid Chargerr(75+ Tool Compatibility, 60Min Runtime)
- Brand: Greenworks
- Manufacturer: Greenworks
- Color: Green&Black
- Dimensions: Height: 42.12 inches Width: 25.63 inches Length: 68.89 inches Weight: 59.52 pounds `
The Greenworks 60V 21″ Cordless Lawn Mower is easy to start and quiet to use. It feels light and comfortable, making mowing less tiring. The 5.0Ah battery offers up to 60 minutes of continuous cutting time. You can quickly recharge it with the rapid charger and get back to work. This mower is compatible with over 75 tools, so it fits well in many tool collections. Its cordless design lets you move freely without worrying about cords. People enjoy how smooth and efficient their lawn care becomes with this mower.
Advantages
- Enjoy quiet mowing with a battery-powered lawn mower.
- Save time thanks to the 60-minute runtime per charge.
- Experience easy handling with a lightweight, cordless design.
- Use one battery for over 75 Greenworks tools.
- Charge quickly with the included rapid charger for convenience.
Disadvantages
- Battery life may not last for very large lawns.
- Can be heavier compared to some gas mowers.
- Charging time might be longer than expected.
- Cutting height adjustments can feel less smooth.
- Limited power for very thick or tall grass.
Our Recommendations
This Greenworks 60V lawn mower is very easy to use. The 5.0Ah battery lasts a full hour, which is great for my yard. It cuts grass evenly and quickly without much noise. The rapid charger saves time, so the mower is ready fast. I like that it works with many other Greenworks tools. The mower feels light and easy to push around. Perfect for small to medium lawns. No cords means no hassle. This mower makes lawn care simple and smooth.
Frequently Asked Questions
What Is The Best Type Of 21 Inch Lawn Mower?
The best 21 inch lawn mower depends on your yard size and needs. Gas mowers offer power, while electric ones are quieter and easier to maintain.
How Do 21 Inch Lawn Mowers Compare To Larger Ones?
21 inch mowers are lighter and easier to maneuver. They suit small to medium lawns but cover less ground per pass than bigger mowers.
Are 21 Inch Lawn Mowers Good For Small Yards?
Yes, 21 inch mowers are ideal for small yards. They provide enough cutting width without being hard to control or store.
What Features Should I Look For In A 21 Inch Mower?
Look for adjustable cutting heights, easy start systems, and good grass collection options. These features make mowing simpler and more efficient.
Buying Guide On Best 21 Inch Lawn Mowers
1. Consider the Power Source
Choose between gas, electric, or battery-powered models. Gas mowers offer strong power but need fuel. Electric mowers are quieter and need less maintenance. Battery-powered mowers give more freedom without cords.
2. Check the Cutting Width
A 21-inch cutting width is ideal for small to medium yards. It balances maneuverability and coverage. Larger widths cover more ground but can be harder to handle.
3. Look at the Cutting Height Options
Select a mower with adjustable cutting heights. This helps to keep grass healthy and neat. Multiple settings make it easy to match different grass types.
4. Evaluate the Weight and Size
Lighter mowers are easier to push and store. Consider your strength and yard size. Compact mowers fit better in small storage spaces.
5. Check for Easy Start Features
Some mowers have push-button or electric start systems. This saves effort compared to pull cords. Easy start means less hassle every time.
6. Look for Good Maneuverability
Sharp turning radius helps in tight spaces. Larger wheels provide better movement on uneven ground. Consider how easy it is to steer the mower.
7. Review the Grass Collection System
Decide if you want a bagging, mulching, or side discharge mower. Bagging collects clippings for easy disposal. Mulching cuts clippings fine to nourish the soil.
8. Examine the Build Quality
Strong materials last longer and resist damage. Steel decks are durable but heavier. Plastic parts reduce weight but may wear faster.
9. Consider Noise Levels
Electric and battery mowers tend to be quieter. Gas mowers can be loud and may disturb neighbors. Noise can affect your comfort while mowing.
10. Check Maintenance Needs
Electric mowers require less upkeep than gas models. Regular blade sharpening and cleaning keep mowers efficient. Easy maintenance saves time and money.
Conclusion
Choosing the right 21 inch lawn mower makes mowing easier and faster. These mowers fit well in small to medium yards. They are light, easy to push, and store without taking much space. Think about your yard size, terrain, and budget before buying.
Also, check features like cutting height and power source. Whether you want gas, electric, or battery-powered, there is a mower for you. Taking time to pick the best mower helps keep your lawn neat and healthy. A good mower saves effort and makes yard work less tiring.
Now you have the info to find the best 21 inch lawn mower that suits your needs. Keep your grass trimmed and your yard looking great all season long. Happy mowing!